package jdbc;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;

public class JDBCDemo7 {
    public static void main(String[] args) {
        try ( Connection connection=DBUtil.getConnection();){
            String sql="SELECT id,username,password,nickname "+
                    "FROM user "+
                    "WHERE username=? AND password=?";
            PreparedStatement ps=connection.prepareStatement(sql);
            ps.setString(1,"小花");
            ps.setString(2,"123456");

            ResultSet rs=ps.executeQuery();
            if (rs.next()){
                System.out.println("登录成功!");
            }else {
                System.out.println("登录失败!");
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }

    }
}
